| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 47°F | 32°F | 0.7" |
| February | 27°F | 55°F | 40°F | 0.5" |
| March | 31°F | 64°F | 47°F | 0.5" |
| April | 36°F | 69°F | 52°F | 0.6" |
| May | 43°F | 78°F | 61°F | 0.6" |
| June | 51°F | 89°F | 72°F | 0.3" |
| July | 59°F | 98°F | 81°F | 0.1" |
| August | 56°F | 96°F | 77°F | 0.1" |
| September | 48°F | 87°F | 67°F | 0.1" |
| October | 37°F | 73°F | 54°F | 0.5" |
| November | 28°F | 59°F | 42°F | 0.5" |
| December | 20°F | 46°F | 32°F | 0.5" |
| Index | Yerington | Nevada | National |
| Air quality index | 13 | 38 | 42 |
| Pollution index | 599,976 | 2,601,914 | 2,726,193 |
| Measurement | Total |
| Days measured | 356 |
| Days with good air quality | 346 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.030% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Smith Valley, NV | 1,747 | 13 | 74.0% |
| Yerington, NV | 3,282 | 13 | 74.0% |
| City | Population | Air Quality Index | National Avg. |
| Iowa, LA | 3,282 | 45 | 10.0% |
| Centerville, PA | 3,282 | 36 | 28.0% |
| Monument Beach, MA | 3,281 | 36 | 28.0% |
| Hogansville, GA | 3,283 | 42 | 16.0% |
| Warrensburg, NY | 3,283 | 36 | 28.0% |
| Yerington, NV | 3,282 | 13 | 74.0% |